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公开(公告)号：US4252778A
公开(公告)日：1981-02-24
申请号：US972156
申请日：1978-12-21
申请人： Ralph T. Yang , Ming-Shing Shen
发明人： Ralph T. Yang , Ming-Shing Shen
CPC分类号： B01D53/52
摘要： A method for removing sulfurous gases such as H.sub.2 S and COS from a fuel gas is disclosed wherein limestone particulates containing iron sulfide provide catalytic absorption of the H.sub.2 S and COS by the limestone. The method is effective at temperatures of 400.degree. C. to 700.degree. C. in particular.
摘要翻译： 公开了一种从燃料气体中除去H2S和COS等亚硫酸气体的方法，其中含有硫化铁的石灰石颗粒提供了由石灰石对H2S和COS的催化吸收。 该方法特别在400〜700℃的温度下有效。
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2.发明授权
公开(公告)号：US4225572A
公开(公告)日：1980-09-30
申请号：US947664
申请日：1978-09-29
申请人： Ming-Shing Shen , Ralph T. Yang
发明人： Ming-Shing Shen , Ralph T. Yang
CPC分类号： B01J23/94 , B01D53/8609 , C01F11/08 , Y02P20/584
摘要： Lime utilization for sulfurous oxides absorption in fluidized combustion of carbonaceous fuels is improved by impregnation of porous lime particulates with iron oxide. The impregnation is achieved by spraying an aqueous solution of mixed iron sulfate and sulfite on the limestone before transfer to the fluidized bed combustor, whereby the iron compounds react with the limestone substrate to form iron oxide at the limestone surface. It is found that iron oxide present in the spent limestone acts as a catalyst to regenerate the spent limestone in a reducing environment. With only small quantities of iron oxide the calcium can be recycled at a significantly increased rate.
摘要翻译： 通过用氧化铁浸渍多孔石灰颗粒，改善碳质燃料流化燃烧中亚硫氧化物吸收的石灰利用。 浸渍通过在转移到流化床燃烧器之前将混合的硫酸铁和亚硫酸盐的水溶液喷射到石灰石上来实现，由此铁化合物与石灰石基底反应以在石灰石表面形成氧化铁。 发现废石灰石中存在的氧化铁作为催化剂在还原环境中再生废石灰石。 只有少量的氧化铁才能以显着增加的速度回收钙。
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公开(公告)号：US4314980A
公开(公告)日：1982-02-09
申请号：US125406
申请日：1980-02-28
申请人： Ming-Shing Shen , James M. Chen , Ralph T. Yang
发明人： Ming-Shing Shen , James M. Chen , Ralph T. Yang
IPC分类号： C01B33/24
CPC分类号： C01B33/24
摘要： This invention relates to the preparation of fine particles of reactive beta-dicalcium silicate by means of a solid state process which comprises firing a mixture of calcium sulfate, silica and a reducing additive selected from the group consisting of calcium sulfide, carbon, carbon monoxide, methane and hydrogen, at a temperature of about 850.degree.-1000.degree. C. A carrier gas such as nitrogen or carbon dioxide may also be added, if desired. A high concentration of sulfur dioxide is a by-product of this process.
摘要翻译： 本发明涉及通过固态方法制备反应性β-二硅酸二钙细颗粒，其包括硫酸钙，二氧化硅和还原添加剂的混合物的烧制，所述还原添加剂选自硫化钙，碳，一氧化碳， 甲烷和氢气，在约850℃-1000℃的温度下。如果需要，也可以加入载气如氮气或二氧化碳。 高浓度的二氧化硫是这个过程的副产品。
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